Wednesday
October 26, 2016

# Search: Statistics - Correlation Coefficient/Regression

Number of results: 15,505

Statistics
Suppose the correlation between two variables is -0.57. If each of the y-values is multiplied by -1, which of the following is true about the new scatterplot? It slopes up to the right, and the correlation is -0.57 It slopes up to the right, and the correlation is +0.57 It ...
December 18, 2012 by Jill

Statistics
X Y 0 23 2 27 2.3 29 4.1 32 5 35 What is the correlation for this data set? 10) Find the regression line for this data set.
May 25, 2013 by Ana

statistics
Suppose IQ scores were obtained from randomly selected twins. For 20 such pairs of people, the linear correlation coefficient is 0.876 and the regression line is y-hat = 11,76 + 0.89x, where x represents the IQ score of the twin born second. Also,the 20x values have a mean of ...
March 7, 2015 by slomomo

Statistics
In conducting multiple regression analyses (MRAs), a major technical concern involves any high correlation of predictor (regressor) variables included in the model. The term for this is ....? A. Redundant predictors B. Close "knit" IVs C. Multicollinearity D. Correlative ...
September 2, 2012 by Pat

Stats
The linear correlation coefficient is a numerical value that ranges from -1.00 to +1.00. Describe in a sentence or two the meaning of each of these correlation coefficients: a) -1.00 b) +1.00
October 20, 2011 by Jennifer

statistics
For problems 12 to 14, do the following: (a) Make a scatter diagram of the scores; (b) describe in words the general pattern of correlation, if any; (c) figure the correlation coefficient; (d) figure whether the correlation is statistically significant (use the .05 ...
January 8, 2011 by kamelia

statistics
For problems 12 to 14, do the following: (a) Make a scatter diagram of the scores; (b) describe in words the general pattern of correlation, if any; (c) figure the correlation coefficient; (d) figure whether the correlation is statistically significant (use the .05 ...
January 8, 2011 by kamelia

Statistics
The linear correlation coefficient, r, is a numerical measure of the strength of the relationship between two variables representing quantitative data.
May 17, 2011 by EJ

statistics
How to (1)Comment on the R-squared. (2). Conduct the test of significance for the regression equation in part 1. Interpret your finding. (3). Interpret the correlation coefficient. (4). Test the significance of the strength of relationship. ( use á =.10) Data School-Enroll-Per...
August 1, 2008 by Azim

Statistics
Using a sample of recent university graduates, you estimate a simple linear regression using initial annual salary as the dependent variable and the graduate's weighted average mark (WAM) as the explanatory variable. If the regression model has an estimated intercept of 2200 ...
May 25, 2012 by Anthony

A sample of eight observations of variables x and y is shown below: x 5 3 7 9 2 4 6 8 y 20 23 15 11 27 21 17 14 Find the value of coefficient of correlation, r. a) - 0.991 b)0.872 c)- 0.512 d)0.942
March 29, 2009 by Stuart

Statistics
Determine the regression line of x+2y-5=0 and 3x+3y-8=0 (i) y on x and (ii) x on y, (iii) Find r using the regression coefficients
September 26, 2011 by Deepti

math gre ques
A sudent is analyzing data from an experiment using a linear model. when the student entered the data into his calculator and ran a least squares linear regression the calculator gave a correlation coefficient of 0.01. what can the student infer from this coefficient? a. the ...
January 8, 2012 by luckybee

Statistics
For the regression equation, Y=bX+a, which of the following X,Y points will be on the regression line? a, a,b b, b,a c, 0,a d, 0,b
October 26, 2012 by Robbie

Stats
Can someone please show me how to solve this step by step. I'm trying to understand the whole concept but I'm getting confused... Find the sample linear correlation coefficient between x and y: x: 5, 2, 2 y: 7, 4, 7 x^2: 25, 4, 4 y^2: 49, 16, 49 xy: 35, 18, 14 I know how to ...
June 29, 2013 by y912f

Statistics
True or false? The linear correlation coefficient, r, is a numerical measure of the strength of the relationship between two variables representing quantitative data.
May 19, 2011 by Bill

statistics
5. The ages of husbands and wives in a community were found to have a correlation coefficient equal to +0.8; the average of husbands’ ages was 25 years and that of wives’ ages 22 years; their standard deviations were respectively 4 and 5 years. Find the two lines of regression...
January 14, 2012 by Deba

statistics
5. The ages of husbands and wives in a community were found to have a correlation coefficient equal to +0.8; the average of husbands’ ages was 25 years and that of wives’ ages 22 years; their standard deviations were respectively 4 and 5 years. Find the two lines of regression...
February 11, 2012 by Deba

math
if the relation between x and u is 3x + 4u + 7 = 0 and the correlation coefficient between x and y is -0.6, then what is correlation coefficient u and y
October 20, 2015 by nnn

stats
if the relation between x and u is 3x + 4u + 7 = 0 and the correlation coefficient between x and y is -0.6, then what is correlation coefficient u and y a)-0.6 b)0.8 c)0.6 d)-0.8
October 20, 2015 by nnn

Statistics
Is is possible for the regression equation to have none of the actual (observed) data points located on the regression line?
December 2, 2012 by Julia

Statistics
The eggs of a species of bird have an average diameter of 23 mm and an SD of 0.45 mm. The weights of the chicks that hatch from these eggs have an average of 6 grams and an SD of 0.5 grams. The correlation between the two variables is 0.75 and the scatter diagram is roughly ...
March 15, 2013 by Kimberly

Math
You are given the following data. # of Absences Final Grade 0 96 1 92 2 71 3 66 4 60 5 51 A. Find the correlation coefficient for the data. B. Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
October 21, 2011 by Jen

Stats
You are given the following data. # of Absences Final Grade 0 96 1 92 2 71 3 66 4 60 5 51 A. Find the correlation coefficient for the data. B. Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
October 23, 2011 by Jennifer

PLZ HELP....STATS
You are given the following data. # of Absences Final Grade 0 96 1 92 2 71 3 66 4 60 5 51 A. Find the correlation coefficient for the data. B. Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
October 23, 2011 by Jennifer

Statistics
For the following set of scores: X Y 6 4 3 1 5 0 6 7 4 2 6 4 a) Compute the Pearson correlation. b) Add 2 points to each X value and compute the correlation for the modified scores. How does adding a constant to every score affect the value of the correlation? c)Multiply each ...
April 24, 2014 by Mary

STATS
X 3, 5, 6, 8, 9, 10, 12, 14, 15 Y 30,33,34,36,37,40, 50, 60, 70 Calculate Linear Correlation Coefficient r Use significance level 0.05 and Appendix Table A-6 to make decision about linear correlation between x and y.
March 30, 2010 by Mary

statistics
The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average petal length is 3.1 cm and the SD is 0.25 cm. The average petal width is 1.8 cm and the SD is 0.2 cm. (a)One of the petals is 0.2 cm wider ...
March 28, 2013 by pat

STATISTICS
True or False? A researcher is interested in studying whether there is a correlation of IQ with health. For this purpose he selected a sample of 261 people and asked them to complete two questionnaires: one for IQ and one for health. After evaluating the questionnaires each ...
September 6, 2013 by Marian

If the total variation in y values is 200, and the variation explained by regression line is 180, then the coefficient of determination is equal to __________. A) 1.11 B) 0.90 C) 0.81 D) 1.21 I picked D 1.21
March 15, 2009 by Stuart

Stats
Construct a scatterplot for the (x, y) values below, and answer the following questions. You do NOT need to submit your scatterplot with your answer; however, show all other work. x y 1 2.5 2 5.0 3 7.5 4 10.0 5 12.5 - What would be the slope of this regression line? - Would ...
October 7, 2012 by Anonymous

statistics
a training manager wants to know if there is a link between the hours spent by particular category of employeee in training and their productivity on the job. a ssmple of 10 employee files was randomly selected and the following data extracted: employee productivity hrs in ...
April 27, 2007 by mary

Statistics
How would you interpret the findings of a correlation study that reported a linear correlation of +0.3? I believe they have nothing in common because they are close to one. Please advise
June 10, 2014 by Chevelle DuBois

Econ/stats
The following data represent the number of flash drives sold per day at a local computer shop and their prices. Price (x) Units Sold (y) \$34 3 36 4 32 6 35 5 30 9 38 2 40 1 a. Develop a least-squares regression line and explain what the slope of the line indicates. b. Compute ...
April 29, 2012 by Ruth

Econ/stats
The following data represent the number of flash drives sold per day at a local computer shop and their prices. Price (x) Units Sold (y) \$34 3 36 4 32 6 35 5 30 9 38 2 40 1 a. Develop a least-squares regression line and explain what the slope of the line indicates. b. Compute ...
April 29, 2012 by Ruth

Math
Natalie performs a chemistry experiment where she records the temperature of an ongoing reaction. The solution is 93.5º C after 3 minutes; 90º C after 5 minutes, 84.8 C after 9 minutes; 70.2º C after 18 minute; 54.4º C after 30 minutes; 42.5ºC after 37 minutes; and 24.9º C ...
May 1, 2013 by Brittany

algebra 1
Natalie performs a chemistry experiment where she records the temperature of an ongoing reaction. The solution is 93.5º C after 3 minutes; 90º C after 5 minutes, 84.8 C after 9 minutes; 70.2º C after 18 minute; 54.4º C after 30 minutes; 42.5ºC after 37 minutes; and 24.9º C ...
May 1, 2013 by Brittany

math help pls pls pls
The table below shows the age of some participants in a quiz competition and the number of questions they could answer correctly: Age (years) (x) 15 21 17 22 16 19 18 Number of questions they could answer (y) 17 17 17 17 17 17 17 What is the correlation coefficient for the ...
April 19, 2016 by Oscar

statistics
Automobile racing, high-performance driving schools, and driver education programs run by automobile clubs continue to grow in popularity. All these activities require the participant to wear a helmet that is certified by the Snell Memorial Foundation, a not-for-profit ...
August 8, 2012 by Anonymous

Stats
Observations are taken on sales of a certain mountain bike in 30 sporting goods stores. The regression model was Y = total sales (thousands of dollars), X1 = display floor space (square meters), X2 = competitors’ advertising expenditures (thousands of dollars), X3 = advertised...
September 30, 2010 by Mat

stats
Can someone please help me, I have been working on this for 2 hours now and I keep getting a negative answer. You are given the following data. Number of Absences Final Grade 0 99 1 94 2 79 3 73 4 68 5 53 - Find the correlation coefficient for the data. - Find the equation for...
July 14, 2011 by Celest

statistics
These data were generated using the equation y = 2x + 1. A scatter diagram of the data results in five points that fall perfectly on a straight line. x 0 1 2 3 4 y 1 3 5 7 9 (a) Find the correlation coefficient.
May 26, 2013 by DeeDee

Math
is coefficient of correlation and coefficient of determination the same thing? or different?
June 12, 2011 by Thara

Math
is coefficient of correlation and coefficient of determination the same thing? or different?
June 12, 2011 by Thara

math/stats
If you square a correlation coefficient and subtract this number from 1.00, what is the result? Is it the coefficient of determination?
February 6, 2010 by Patty

social psy
) Researcher wants to look at the correlation between class attendance and grade in class (higher numbers indicating a higher grade). The researcher found the following result r = .82. The correlation coefficient tells researchers two pieces of information, the strength of the...
October 3, 2011 by deb

statistics
Please Help! My book and instructor are no help. Please help me understand why I need to make a scatter diagram, when dealing with bivariate data, and how to find SS(x), SS(y), SS(xy), and r. I have all the formulas, but don't understand. Thanks! I don't know that the diagram ...
August 30, 2005 by Rebecca

Algebra
2. Find the value of x^3 +2x^2 -3 when x =3 Answer-42 12. What type of correlation would you expect between the number of minutes a candle burns and the height of the candle? a. no correlation b. positive correlation c. negative correlation d. equal correlation Answer-c 13. ...
August 7, 2011 by lizzie

statistics
For a given set of data, it is known that x = 10 and y = 4. The gradient of the regression line y on x is 0.6. Find the equation of the regression line and use it to estimate y when x = 8.
April 24, 2015 by ednah

Statistics
Please Help me understand how to work this problem. I have been working on this problem for several days and do not understand what to do. Suppose IQ scores were obtained from randomly selected twins. For 20 such pairs, of people the linear correlation coefficient is 0.922 and...
July 4, 2015 by Shannon

Statistics
Hi Can anyone tell me in a regression model are the values of 0.13 0.10 A good indication of of the total y explained in a regression model ?? Thanks.
June 4, 2009 by Gary

static
The coefficient of correlation between the age and blood pressure of a sample of 8 persons was found to be +0.8, the average age is 50 years and average blood pressure is 60. Their standard deviations were 5 and 10 respectively. a) Obtain the two regression equations b) find ...
January 2, 2016 by moon

Statistic
Number of Absences Final Grade 0 93 1 93 2 77 3 68 4 65 5 54 - Find the correlation coefficient for the data. I got this part of my answer. I believe the answer to be -0.9767 I am just going crazy with the second part. - Find the equation for the regression line for the data, ...
October 18, 2012 by Ashley S

math help pls pls
The correlation coefficient for blood pressure and amount of vegetables eaten in a group of people is −0.7. Analyze the following statement: High blood pressure is caused by not eating vegetables. Is this a reasonable conclusion? No; blood pressure and eating vegetables ...
March 14, 2016 by Oscar

Correlations
Which type of correlation would you expect to see between the distance traveled and the time it takes to travel that distance? A. positive correlation B. negative correlation C. no correlation idk why this question is confusing me, but it is
November 11, 2013 by hermes

algebra
Which type of correlation would you expect to see between the distance traveled and the time it takes to travel that distance? A. positive correlation B. negative correlation C. no correlation idk why this question is confusing me, but it is
November 12, 2013 by hermes

statistics
Calculate the Pearson’s correlation coefficient Assessed value (R’000) Selling price (R’000) 116 185 160 246 144 236 103 162 205 300
September 15, 2014 by shahistha

statistics for health research
1.A study is conducted to determine the factors that affect the increased maternal mortality rates in Kenya. Establish the variables (at least 5 variables) that you would use to conduct the study. State your expected results and explain how you will apply Correlation and ...
June 16, 2014 by maureen

Instructions: Prepare your answers using Excel and show your work to get full or partial credit. Question 1: Using the file Wages.xlsx which contains information of working individuals, for a nationwide firm (Value 7 points). a) Run Descriptive Statistics for the variables ...
December 14, 2011 by Katie

statistics
what is the most likely answer for the confidence coefficient of linear correlation if x = the number of hours spent studying for a test, and y = the number of points earned on the test?
August 20, 2010 by marie

Statistics
Which, if any, of the values listed below for a correlation coefficient indicate a situation where more than half of the variation in one variable is associated with variation in the other variable? -.7 1 .3 .6 .9 I was thinking B
November 12, 2012 by Mike

algebra 1
*I have asked countless people to help me with this story problem and nobody seems to know how to do it! Please help! Natalie performs a chemistry experiment where she records the temperature of an ongoing reaction. The solution is 93.5º C after 3 minutes; 90º C after 5 ...
May 2, 2013 by Brittany

statistics
8.Jean Siskel is an entertainment analyst for West Coast Securities. He is trying to develop a model to estimate gross earning generated by a new movie release. He has collected the following data on 20 movies: Gross Earnings, Production Costs, Promotion Costs, and if the ...
May 8, 2014 by Mary

statistics
8.Jean Siskel is an entertainment analyst for West Coast Securities. He is trying to develop a model to estimate gross earning generated by a new movie release. He has collected the following data on 20 movies: Gross Earnings, Production Costs, Promotion Costs, and if the ...
May 8, 2014 by Russel

Economics
Please correct if I have stated the right correlation to the following relationships: a) volume of auto traffic and auto accident rate -> 0 correlation b) pesticide and crop yield -> negative correlation c) consumption and GDP -> positive correlation
January 25, 2011 by Anonymous

Psychology Statistics
2 For a sample of n = 20 individuals, how large a Pearson correlation is necessary to be statistically significant for a two-tailed test with  = .05? 3 The Pearson correlation is calculated for a sample of n = 25 individuals. What value of df should be used to ...
April 26, 2013 by Chioma

statistics
A professor is interested in knowing the correlation, if any, of students’ scores on the first and second exams given in his class. Test 1 Test 2 92 86 90 87 89 85 82 90 88 79 92 90 100 92 91 84 Is there a significant correlation? Explain its statistical significance, if any.
February 12, 2012 by John

math
I need a definition for this constant rate of change when graphing in mathematics and for Positive and Negative correlation and also what the pattern is in this a) 1000, 100, 10, 1 I'll give you a definition for positive and negative correlation. Correlation is a linear ...
January 10, 2007 by austin

statistics
The data below are the average one-way commute times (in minutes) of selected students during a summer literature class and the number of absences for those students for the term. Calculate the linear correlation coefficient.
April 6, 2013 by Anonymous

Psychology 315
I have ti figure out the correlation coefficient of a statistical factor o 4 personin a dextrity and anxiety test. 1 1 10, 2 1 8, 3 2 4, 4 4 2 . So I have to figure out the correlation coeficient? this is may part of the task.
February 25, 2015 by Laura

math help pls pls
The correlation coefficient for poor health and not exercising in a group of people is 0.67. Analyze the following statement: Poor health is caused by not exercising. Is this a reasonable conclusion? Yes; everyone who doesn't exercise is by definition unhealthy Yes; the ...
March 5, 2016 by Oscar

statistics
1. In an ANOVA, one group has a much larger sample mean than the other. The analyst decides to remove this group and to conduct the analysis on the remaining groups only. Which of the following statements is correct? Select one: a. This analysis is not correct, as now the ...
October 14, 2013 by Jumbo

statistics
True or False: A zero population correlation coefficient between a pair of random variable means that there is no linear relationship between the random variable.
February 8, 2010 by iyra

Statistics
Test the significance of the correlation coefficient r at a=0.05 for the data below. X values 59, 65, 73, 80, 89 Y values 97, 102, 110, 117, 125 A) Accept p=0 because 60.81<3.18 B) Reject p=0 because 61.13>3.18 C) Accept p=0 because 61.13<2.78 D) Reject p=0 because 60...
May 7, 2012 by Lea

Statistics
1.What is the p value (“significance level”)? What does this p value mean? 2.How does the n (sample size) of this sample affect the r and p values? 3.Is there a relationship between assertiveness and whether one holds anger “in”? Descriptive Statistics Mean Std. Deviation N ...
June 16, 2010 by Donald

stats
(correlation and regression) for y = 25, what is the estimated value of value of x, from the following data: X: 11 12 15 16 18 19 21 y: 21 15 13 12 11 10 9 a) 15 b)7 c)13.588 d) 14.986
October 21, 2015 by nithin

Statistics
12.22 A regression was performed using data on 16 randomly selected charities in 2003. The variables were Y = expenses (millions of dollars) and X = revenue (millions of dollars). (a)Write the fitted regression equation. (b)Construct a 95 percent confidence interval for the ...
September 26, 2010 by Kim

Stats Help!
You are interested in knowing whether wealthier people are happier. You collected data from fifty people about their incomes and their overall happiness levels on a scale of 1 to 10. Upon analyzing the results, you find that the correlation coefficient has a value of −0....
December 2, 2015 by slomomo

math
Bill is doing a project for you in the marketing department. Ln conducting his analysis regarding consumer behavior and a new product that has come out, he tells you the correlation between these two variables is 1.09. What is your response to this analysis. Judy conducted an ...
June 5, 2014 by Erma

Statistics
Using the following information find a 95% confidence interval for the intercept in the regression of measured distance on recession velocity. VARIABLE COEFFICIENT STANDARD ERROR Constant 0.3391 0.1185 Velocity 0.001373 0.000227 T-STAT P-VALUE 3.369 0.0028 6.036 0.0000045 Est...
March 14, 2007 by MMK

Statistics
The eggs of a species of bird have an average diameter of 23 mm and an SD of 0.45 mm. The weights of the chicks that hatch from these eggs have an average of 6 grams and an SD of 0.5 grams. The correlation between the two variables is 0.75 and the scatter diagram is roughly ...
March 15, 2013 by Emily

Mth plz...help
A linear regression equation of best fit between a student's attendence and the degree of sucess in school is h = 0.5x + 68.5. the correlation coefficent, r, for these data would be (1) 0 < r < 1 (2) -1< r < 0 (3) r = 0 (4) r = -1
September 21, 2008 by Ashlee

Stats
The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average petal length is 3.1 cm and the SD is 0.25 cm. The average petal width is 1.8 cm and the SD is 0.2 cm. 1. One of the petals is 0.2 cm wider ...
March 28, 2013 by Judy

Stats
The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average petal length is 3.1 cm and the SD is 0.25 cm. The average petal width is 1.8 cm and the SD is 0.2 cm. 1. One of the petals is 0.2 cm wider ...
March 28, 2013 by Judy

statistics
What would you guess the value of the correlation coefficient to be for the pair of variables: "number of man-hours worked" and "number of units of work completed"? a) approximately 0.9 b) approximately 0.4 c) approximately 0.0 d) approximately -0.4 e) approximately -0.9
August 2, 2011 by Anonymous

Finance
Security A has an expected return of 7%, a standard deviation of returns of 35%, a correlation coefficient with the market of -0.3, and a beta coefficient of -1.5. Security B has and expected return of 12%, a standard deviation of returns of 10%, a correlation with the market ...
July 4, 2011 by Jamal

Statistics!!!
b. The correlation between the number correct on a math test and the time it takes to complete the test is -.45. Test whether this correlation is significant for 80 children at the .05 level of significance. Choose either a one-or two-tailed test and justify your choice.
July 8, 2013 by Ethel

statistics
Consider the following table and use the formulas that are given for computing the correlation coefficient. (Give your answer correct to two decimal places.) x 1 1 0 0 0 y 7 3 5 6 6 r = n xy − x y n x2 − x 2 n y2 − y 2 (1) r = SS(xy) SS(x) · SS(y) (2) r = 1....
June 23, 2013 by tracy

Psychology
Four research participants take a test of manual dexterity (high scores mean better dexterity) and an anxiety test (high scores mean more anxiety). The scores are as follows. Person Dexterity Anxiety 1 1 10 2 1 8 3 2 4 4 4 -2 (c) figure the correlation coefficient; (d) figure ...
September 19, 2011 by summer

Statistics
c) There is a correlation between students’ levels of anxiety and the number of days they are absent from school (r = 0.53, p = 0.31). Interpret if this result was statistically significant and explain why or why not. My answer is this: The analysis gives us a correlation ...
December 7, 2015 by Stacy

statistics
Suppose that in the aerobic exercise group we also measured the number of hours of aerobic exercise per week and the mean is 5.2 hours with a standard deviation of 2.1 hours. The sample correlation is -0.42. a)Is there evidence of a significant correlation between number of ...
November 26, 2011 by natasha

Statistics
foofy computes the correlation between an individual's physical strength and his or her college grade poing average. Using a computer, the correlation for a sample of 2000 people is r(1998)=+.08, p=<.0001. she claims this is a useful tool for predicting which college ...
July 10, 2011 by K

Statistics
Simple Linear Regression Analysis 2. Weight of Car: Miles gallon – Do heavier cars really use more gasoline? The following data were obtained from Consumer Reports (Vol 62 no. 4). Weight of car is in hundreds of pounds. Car Weight 27 44 32 47 23 40 34 52 MPG 30 19 24 13 29 17 ...
December 7, 2011 by Kris

math
interpret an r value of -0.82. a)strong negative correlation B)weak negative correlation C)strong positive correlation D)no correlation
November 13, 2009 by princess

STATISTICS
The following data represents the monthly natural gas consumption (in hundreds of cubic feet) for a family for a random sample of nine months selected from five years of data. The other variable is Degree-days which is a measure of temperature. Degree-days are the number of ...
April 16, 2013 by Bettie

multiple regression
5. HR Assistant Survey A sample of HR assistants in Plano Texas was created. It was suggested that the data should be analyzed with a regression model to determine if salary was related to years of experience, aptitude test scores, EI (emotional intelligence)scores, number of ...
September 14, 2011 by Nina

Statistics
In Professor White’s statistics course the correlation between the students’ total scores before the final examination and their final examination scores is r = 0.9. The pre-exam totals for all students in the course have mean 275 and standard deviation 50. The final exam ...
October 21, 2012 by Kevin

Statistics
Why do we need to distinguish between strong and weak correlation of data sets using best-fit lines? When a correlation has been established between the two data sets, how is it linked to causality? Please provide examples to support your answer.
June 1, 2010 by immanuel

Math
Find the value for the correlation coefficient r. x - 21 30 25 24 29 y - 49 41 31 36 39
July 12, 2014 by Shelagh

Discrete Mathematics
A tutor website wants to see how time spent studying for its content exams affects the ultimate scores. It asked its finite math test takers how much time they spent studying for the exam and compared that data against the final scores out of 60 points. It came up with the ...
July 30, 2013 by Joy